2020 came out the second Tuesday of July, not seeing 2021 available yet (20th century), anyone know the date? Assuming Covid has delayed it. The 21st century is being released August 4th I see but no info on the 1901-2000 that I can find.
The delay in releasing the 2020 books was probably due more to the change of ownership that took place recently and the re-organization that followed. Basically, F+W Media went bankrupt and auctioned off a bunch of their assets, with the periodicals part of their business going to Active Interest Media (AIM) and books (including Krause Publications) going to Penguin Random House.
I haven't seen any news on 2021 books yet or even if an e-book version (which I personally find much more convenient to use) would be available.